CN1176728A - A base station of a radio system - Google Patents

A base station of a radio system Download PDF

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Publication number
CN1176728A
CN1176728A CN 96192204 CN96192204A CN1176728A CN 1176728 A CN1176728 A CN 1176728A CN 96192204 CN96192204 CN 96192204 CN 96192204 A CN96192204 A CN 96192204A CN 1176728 A CN1176728 A CN 1176728A
Authority
CN
China
Prior art keywords
unit
base station
radio
wireless
signal
Prior art date
Application number
CN 96192204
Other languages
Chinese (zh)
Other versions
CN1084127C (en
Inventor
哈里·珀斯蒂
Original Assignee
诺基亚电信公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FI950916A priority Critical patent/FI950916A/en
Priority to FI950916 priority
Application filed by 诺基亚电信公司 filed Critical 诺基亚电信公司
Publication of CN1176728A publication Critical patent/CN1176728A/en
Application granted granted Critical
Publication of CN1084127C publication Critical patent/CN1084127C/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/085Access point devices with remote components
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • H04B7/2609Arrangements for range control, e.g. by using remote antennas

Abstract

The present invention relates to a base station of a radio system. The base station has means for establishing a telecommunication connection to radio units in a coverage area of the base station. In order to utilize a capacity of the base station efficiently, the base station comprises a central processing unit with at least one baseband frame unit for supplying baseband signals via switching means, alternatively, to one of at least two radio channel units, and at least two radio set units arranged separately from one another of which at least one of the radio set units is arranged at a distance from the central processing unit. The radio set units are arranged into different radio set units for transferring baseband signals to be transmitted from the frame unit to a radio channel and for forwarding radio frequency signals via an antenna means of the radio set unit.

Description

The base station of radio system
The present invention relates to a kind of base station of radio system, comprising: a CPU (central processing unit), comprising control and attending device, in order to control this base station according to the control signal of launching from base station controller; With at least one base band frame unit, in order to producing baseband signal according to the telecommunication signal of launching from this base station controller and further it optionally to be supplied with at least two radio channel units of this base station one by a switch, and in order to handle the baseband signal of launching from described radio channel and it is further supplied with this base station controller; And in order in the radio coverage of this base station, to set up the device of a radio signal to the telecommunications connection of radio unit.
The present invention at first relates to the variation of capacity requirement of the different piece of the geographic range that is covered by the cellular radio channel.For example, daytime need obviously more traffic carrying capacity in commercial center than night.Correspondingly, the situation in the suburb may be that the capacity requirement on daytime is very little, but then very big at night, because the resident has got back to family from its work position.If the amount of capacity of this cellular radio system is set according to the capacity requirement peak value under these environment, it will cause a kind of like this situation, and promptly quite a few of this power system capacity was not used in one day most of the time.
The solution of previously known is to utilize the calling that can be launched neighbor cell by the antenna that temporarily is directed to that.The coverage of this neighbor cell can not be covered usually fully in the case.
The solution of previously known also has, and switches the additional channel unit that use separates by relay system, and promptly the capacity of this additional channel unit moves to another from a district or sub-district, and its mode is to switch by relay system to change its antenna connection.In the case, the RF signal that connects when the antenna of this additional channel unit can not be launched into very far away, and for example by the very large cable of signal attenuation in cable not, the geographic range that at this moment can obtain volume change therein is very little.This means that the optionally transmitting antenna that this additional channel unit can be switched to should be very approaching mutually owing to actual cause.
The objective of the invention is to address the above problem and provide a kind of base station of radio system, available therein traffic carrying capacity can be transmitted in a kind of simple and convenient mode between different geographic ranges, and its transmission range than in the art methods can be much longer.This purpose realizes by the base station according to radio system of the present invention, it is characterized in that this base station comprises at least two wireless device unit that are arranged with being separated from each other, wherein at least one is arranged with distance CPU (central processing unit) certain distance, therefore described at least two radio channel units are disposed in the different wireless device unit, be transferred to a predetermined radio channel in order to the baseband signal that frame unit is launched, and in order to antenna assembly forward direction forwarding radiofrequency signal, and will supply with frame unit to base band and with this baseband signal with the radio signal transmission that antenna assembly receives via the wireless device unit.
The thought that the present invention is based on is, when at least two wireless device unit that comprise radio unit and antenna assembly that are arranged at a certain distance mutually are connected on the base station, this service in base station amount can be dispensed in the bigger than before scope, because the frame unit in the CPU (central processing unit) can optionally be switched to the arbitrary wireless device unit that is positioned according to the capacity requirement of moment with being separated from each other.Because the signal that provides of CPU (central processing unit) is up to just being transferred to radio frequency on the wireless device unit, the transmission range of radiofrequency signal and can be minimized by the loss that its transmission causes.Because independently the armamentarium expense of the base station of previously known is much lower than two kinds for the armamentarium expense of CPU (central processing unit) according to the present invention and the wireless device unit that separates, adopt the method according to this invention before method can obtain tangible economic advantages.Remarkable advantage according to base station of the present invention is thus, owing to can shift its capacity in desired location, the capacity of this base station can be used effectively in whole day, and the mutual position in the zone that its capacity can be transferred is much far away than known method, and its cost of equipment will be much lower.
Most preferred embodiment according to base station of the present invention is conspicuous from appended dependent claims 2 to 7.Hereinafter, will be by a more detailed ground explain the present invention of most preferred embodiment with reference to the accompanying drawings, this accompanying drawing has been set forth a block diagram according to base station of the present invention.
Base station shown in the figure can be, for example, and the base station of a gsm system.The 26S Proteasome Structure and Function of this gsm system exists, for example, and M.Mouly﹠amp; M.Pautet, Palaiseau, France, 1992, explained in the gsm system of the mobile communication of ISBN:2-9507190-0-0-7, therefore herein it is repeated no more.
The base station among the figure and the difference of known base station are that the equipment of this base station is dispersed in a big geographic area.Therefore have only the CPU (central processing unit) of a base station BTS at the physical location place of this base station, wireless device unit 1 to 4 is coupled via data transmission channel 5.One or more wireless devices unit is advanced in the CPU (central processing unit) of this base station BTS of (not shown) or is placed in its close vicinity by set advantageously.
The CPU (central processing unit) of this base station BTS comprises work and maintenance unit OMU, participates in the communication between this base station and the base station controller BSC and controls the operation of this base station.This CPU (central processing unit) BTS also comprises several broadband frame unit BBU1 to BBU10 (Base Band Unit), with thinking that wireless device unit 1 to 4 produces baseband modulation signal, and handle and to be received by wireless device unit 1 to 4 and be emitted to the signal of base band by it, so that its forward direction is forwarded to base station controller BSC.User data that is launched in frame unit BBU1 to BBU10 and control data quilt are by chnnel coding, insert and place tdma frame (time division multiple access), after this they are provided for the radio unit that is arranged in the wireless device unit, they are with a kind of required transmission base band therein, be radio channel, be modulated to the TDMA burst.Correspondingly, frame unit BBU1 to BBU10 carries out input, and frame discharges, and intersects to discharge and channel-decoding.
Frame unit BBU1 to BBU10 is converted to wireless device unit 1 to 4 via a switching matrix 8.This switching matrix 8 can be with arbitrary frame unit BBU1 to BBU10 partly (being specific time slot) or integrally be converted to arbitrary wireless device unit 1 to 4.Selected exchanged form depends on required capacity requirement in the coverage of each wireless device unit 1 to 4.
Data channel 5 among the figure can comprise an optical fiber according to transmitting range and capacity requirement, a cable or a microwave relay link.Its transmission range is limited by the propagation delay that described radio system allows, and this delays relating to, and for example, is used for the time of emission data on data channel 5.For example, the propagation delay of this gsm system permission is equivalent to transmission range about 35 kilometers on the radio-ray path.
Wireless device unit 1 to 4 comprises an interface unit I/F, in order to participate in the communication between wireless device unit and the central processor unit BTS.Wireless device unit 1 to 4 also comprises radio channel unit RF1 to RF4, to receive the baseband signal of launching from data channel 5, described signal is emitted to predetermined radio channel, and transmits this radiofrequency signal via combiner device 6 and antenna ANT1 forward direction.In like manner, radio channel unit RF1 to RF4 is from reception antenna ANT2 and combiner device 6 received RF signals, and it is transmitted to specific Base Band Unit BBT1 to BBT2 among the CPU (central processing unit) BTS via interface unit I/F before it is transferred to base band.
In the base band in the drawings can with two kinds optionally mode adopt frequency hopping.First kind of possible mode is, radio channel unit RF1 to RF4 in each wireless device unit 1 to 4 is tuned on its different radio channel regularly, therefore mode realizes frequency hopping thus, promptly launches the different time slot of the logic channel of a regulation selectively on different radio channel unit RF1 to RF4 according to a predetermined frequency hop sequences.This thus mode realize, promptly usually in emission for example before new burst, arrange switching matrix 8 specific frame unit BBU1 to BBU10 optionally is converted on the different radio channel unit RF1 to RF4 of identical wireless device unit 1 to 4, the radio channel by the logic channel of described frame unit maintenance also will change thus.
Another possible mode that realizes frequency hopping is, a specific frame unit BBU1 to BBU10 constantly offers signal same radio channel unit RF1 to RF4, and the radio channel of this radio channel unit always for example is changed before a new burst in emission thus.
In the situation shown in the figure, the coverage of radio channel unit RF1 to RF4 is considered to independently radio plot.Therefore a time slot of a radio channel unit is retained from each wireless device unit, in order to send a required BCCH channel of this gsm system.Different thus wireless device unit adopts different channels to send the BCCH channel.
Yet, if to such an extent as to the mutual spacing of wireless device unit their non-interference enough far away, the wireless device unit can send the BCCH channel on identical channel.If topological structure is suitable or work as the different piece that the wireless device unit is positioned at the same building thing, their non-interference also can utilize identical channel to send the BCCH channel thus.The other method that sends the BCCH channel is, arrange that two are all utilized the wireless device unit of synthesizer frequency hopping to adopt identical BCCH channel, make the wireless device unit of winning only during a time slot, use the BCCH channel, promptly specifically in order to send the BCCH channel.On the other hand, second wireless device utilizes all possible time slot on the BCCH channel, makes it use a time slot with emission BCCH channel, launches for example Traffic Channel on other channels.
Note that the above-mentioned specification and the accompanying drawing that relate to thus only are intended to explain the present invention.For those skilled in the art, apparent different variations of the present invention and modification do not depart from the scope and spirit of the present invention that present in appended claims.

Claims (7)

1. the base station of a radio system comprises:
A CPU (central processing unit) (BTS) comprises control and attending device (OMU), in order to control this base station according to the control signal of launching from base station controller (BSC); With at least one base band frame unit (BBU1-BBU10), in order to producing baseband signal according to the telecommunication signal of launching from this base station controller and further it optionally to be offered at least two radio channel units (RF1-RF4) of this base station one by a switch (8), and in order to handle the baseband signal of launching from described radio channel unit and with its further supply this base station controller (BSC); And
In order in the radio coverage of this base station, to set up the device of a radio signal to the telecommunications connection of radio unit (MS), it is characterized in that,
This base station comprises at least two wireless device unit (1-4) that are arranged discretely each other, wherein at least one is arranged with distance CPU (central processing unit) certain distance, therefore described at least two radio channel units (RF1-RF4) are disposed in the different wireless device unit (1-4), be transferred to a predetermined radio channel in order to the baseband signal that frame unit (BBU1-BBU10) is launched, and in order to antenna assembly (ANT1) forward direction forwarding radiofrequency signal, and will supply with frame unit (BBU1-BBU10) to base band and with this baseband signal with the radio signal transmission that antenna assembly (ANT2) receives via wireless device unit (1-4).
2. according to the base station of claim 1, it is characterized in that, at least one wireless device unit (1-4) is comprising a bronzing fibre, having a transfer of data with CPU (central processing unit) (BTS) on the data channel of one copper cable or one section microwave link (5) is connected, this CPU (central processing unit) (BTS) and this wireless device unit (1-4) comprise signal shaping (BBU1-BBU10 thus, I/F), be shaped to a kind of form that is suitable for going up transmission in order to the telecommunication signal that will transmit betwixt at data channel (5).
3. according to the base station of claim 1 or 2, it is characterized in that, at least one wireless device unit (1-4) comprises several radio channel units (RF1-RF4) that are tuned to different radio channels, arranged a specific frame unit (BBU1-BBU10) thus, with according to a frequency hop sequences, will offer the different radio channel unit of same wireless device unit (1-4) with the signal that same logic channel is correlated with via switch (8) by base station controller (BSC) appointment.
4. according to the base station of claim 1 or 2, it is characterized in that, specific frame unit (BBU1-BBU10) is arranged will the signal relevant with same logic channel repeatedly offering the same radio channel unit (RF1-RF4) of wireless device unit (1-4), and described radio channel unit (RF1-RF10) comprises in order to according to the device that is changed the radio channel that will be used by a frequency hop sequences of base station controller (BSC) appointment.
5. according to each base station of claim 1 to 4, it is characterized in that, this base station is the base station of a time-division cellular radio system, same thus frame unit (BBU1-BBU10) is arranged, and offers the radio channel unit (RF1-RF4) that is arranged in different wireless device unit (1-4) with the signal that will launch on different time slots via switch (8).
6. according to each base station of claim 1 to 5, it is characterized in that described base station is the base station of a gsm system.
7. according to each base station of claim 1 to 6, it is characterized in that the distance between at least one wireless device unit (1-4) and CPU (central processing unit) (BTS) is several kilometers.
CN96192204A 1995-02-28 1996-02-26 a base station of a radio system CN1084127C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI950916A FI950916A (en) 1995-02-28 1995-02-28 Base station in a radio system
FI950916 1995-02-28

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Publication Number Publication Date
CN1176728A true CN1176728A (en) 1998-03-18
CN1084127C CN1084127C (en) 2002-05-01

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US (1) US6058317A (en)
EP (1) EP0812519B1 (en)
JP (1) JP3912795B2 (en)
CN (1) CN1084127C (en)
AT (1) AT288173T (en)
AU (1) AU700641B2 (en)
DE (1) DE69634244T2 (en)
ES (1) ES2235181T3 (en)
FI (1) FI950916A (en)
NO (1) NO973944L (en)
WO (1) WO1996027269A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006007762A1 (en) * 2004-07-21 2006-01-26 Utstarcom Telecom Co., Ltd. Expandable architecture of centrylized base station system
WO2006066449A1 (en) * 2004-12-21 2006-06-29 Zte Corporation A base band processing module n+m backup method based on switching and device thereof
CN100399842C (en) * 2005-02-03 2008-07-02 芯通科技(成都)有限公司 Middle-frequency transmission method and middle-frequency interface for base-station to realize radio-frequency zoom-out
CN100407596C (en) * 2004-08-27 2008-07-30 华为技术有限公司 Apparatus capable of constituting multi-mobile communication equipment and constituted mobile communication equipment thereof
CN101090298B (en) * 2006-06-14 2011-04-20 大唐移动通信设备有限公司 Setting of RRH base station O&M channel
CN103098508A (en) * 2010-08-27 2013-05-08 株式会社日立制作所 Distributed antenna system and wireless communication method used in said system

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6535732B1 (en) * 1995-05-04 2003-03-18 Interwave Communications International, Ltd. Cellular network having a concentrated base transceiver station and a plurality of remote transceivers
CN1510937B (en) 1997-04-17 2013-05-22 Ntt移动通信网株式会社 Communication method in communication system and communication method in communication device
US6101400A (en) * 1997-08-20 2000-08-08 Interwave Communications, Inc. Methods and apparatus for improved base station transceivers
US6411825B1 (en) * 1997-09-09 2002-06-25 Samsung Electronics, Co., Ltd. Distributed architecture for a base station transceiver subsystem
US6801788B1 (en) * 1997-09-09 2004-10-05 Samsung Electronics Co., Ltd. Distributed architecture for a base station transceiver subsystem having a radio unit that is remotely programmable
US6088381A (en) * 1997-12-23 2000-07-11 Ericsson Inc. System for transporting frequency hopping signals
DE69831240T2 (en) * 1998-10-15 2006-06-01 Lucent Technologies Inc. Reconfigurable fiber optic network for wireless transmission
KR20000047947A (en) * 1998-12-22 2000-07-25 윤종용 Modular and distributed architecture for a base station transceiver subsystem
KR20010009378A (en) 1999-07-09 2001-02-05 김영환 Apparatus For Controlling cell site in a digital mobile telecommunication system
KR100329196B1 (en) * 1999-07-19 2002-03-22 박종섭 Apparatus for remote controlling RF unit in a mobile communication base station transceiver system
KR100615419B1 (en) * 1999-08-17 2006-08-25 에스케이 텔레콤주식회사 Wireless communication system for increasing reverse link capacity
CN1119909C (en) * 2000-09-29 2003-08-27 华为技术有限公司 Base station transmitting/receiving machine for global mobile communication system
EP1253723A1 (en) * 2001-04-23 2002-10-30 Lucent Technologies Inc. Transmitter/receiver device with re-configurable output combining
KR100487234B1 (en) * 2002-07-02 2005-05-03 삼성전자주식회사 Base station system for mobile telecommunication system
US20040023692A1 (en) * 2002-07-30 2004-02-05 Allegheny Holdings I, Llc. Microcellular RF transmission system with baseband signal delivery via a wireline connection
US7200391B2 (en) * 2002-12-06 2007-04-03 Airvana, Inc. Capacity enhancement schemes for forward and reverse links of distributed cellular base stations
SE0302596D0 (en) * 2003-09-30 2003-09-30 Ericsson Telefon Ab L M Improvements in or relating to base stations
US7539161B2 (en) * 2003-10-20 2009-05-26 Telefonaktiebolaget Lm Ericsson (Publ) Virtual cell network
US7570615B2 (en) * 2003-10-20 2009-08-04 Telefonaktiebolaget Lm Ericsson (Publ) Resource-sharing cells
SE527308C2 (en) * 2003-10-20 2006-02-07 Ericsson Telefon Ab L M Apparatus and method for distributing resources between cells in a mobile communication network
US20050113024A1 (en) * 2003-11-24 2005-05-26 Capece Christopher J. Wireless distributed base station
US7190973B1 (en) * 2004-02-20 2007-03-13 Cingular Wireless Ii, Llc Method for reconfiguring base station equipment to relieve blocking in a heavily utilized cell sector
CA2582065C (en) * 2004-10-12 2014-11-25 Telefonaktiebolaget Lm Ericsson (Publ) Interface, apparatus, and method for communication between a radio equipment control node and one or more remote radio equipment nodes
CN100426897C (en) * 2005-01-12 2008-10-15 华为技术有限公司 Separated base station system and its networking method and baseband unit
CN101159933B (en) * 2005-05-19 2010-09-08 华为技术有限公司 Split type base station system and networking method and base band unit thereof
CN101277484B (en) * 2005-05-19 2011-07-20 华为技术有限公司 Split type base station system as well as net-building method and baseband unit thereof
JP2007235647A (en) * 2006-03-02 2007-09-13 Kansai Electric Power Co Inc:The Wireless communication system
JP2007274048A (en) * 2006-03-30 2007-10-18 Fujitsu Ltd Wireless communication device
JP5029068B2 (en) * 2007-03-01 2012-09-19 富士通株式会社 Wireless base station
CN101111049B (en) * 2007-08-14 2010-07-28 华为技术有限公司 System, method and network appliance for implementing overlapping multi-region by one subdistrict
CN101198108B (en) * 2007-11-02 2012-06-06 中兴通讯股份有限公司 Method for acquiring radio frequency subsystem addressing of split type base station system
JP5689029B2 (en) 2011-06-09 2015-03-25 株式会社日立製作所 Distributed antenna system, distributed antenna allocation method, base station apparatus
WO2013043577A2 (en) * 2011-09-19 2013-03-28 Purewave Networks, Inc. Cellular systems and methods
US10264626B2 (en) * 2011-11-07 2019-04-16 Dali Systems Co. Ltd. Virtualized wireless network
US9420628B2 (en) 2011-11-07 2016-08-16 Dali Systems Co. Ltd. Virtualized wireless network with pilot beacons
US9258629B2 (en) * 2012-12-11 2016-02-09 Huawei Technologies Co., Ltd. System and method for an agile cloud radio access network
EP2753143B1 (en) * 2013-01-08 2017-08-23 Alcatel Lucent Apparatus, method and computer program for splitting baseband data processing between a plurality of baseband processing units
US10721724B2 (en) * 2016-04-06 2020-07-21 Nippon Telegraph And Telephone Corporation Wireless communication system and communication method
US9730135B1 (en) * 2016-07-28 2017-08-08 At&T Intellectual Property I, L.P. Radio access network resource configuration for groups of mobile devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3424163A1 (en) * 1984-06-30 1986-01-09 Bosch Gmbh Robert RADIO TELEPHONE SYSTEM
US4675863A (en) * 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4694484A (en) * 1986-02-18 1987-09-15 Motorola, Inc. Cellular radiotelephone land station
US5023902A (en) * 1990-01-31 1991-06-11 At&T Bell Laboratories Radio channel unit message and control signal processing architecture
US5084869A (en) * 1990-01-31 1992-01-28 At&T Bell Laboratories Base station for mobile radio telecommunications systems
SE470078B (en) * 1992-03-27 1993-11-01 Ericsson Telefon Ab L M Base station for cellular frequency hopping TDMA radio communication systems
CA2109788C (en) * 1992-11-30 2000-01-18 Salman Yousef Abbasi Microcell including remote radio channel units having a metallic microcell-macrocell wire link to a macrocell radio control complex
FI98974C (en) * 1993-09-24 1997-09-10 Nokia Telecommunications Oy Procedure for securing the function of a base station divided into sectors as well as a base station

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006007762A1 (en) * 2004-07-21 2006-01-26 Utstarcom Telecom Co., Ltd. Expandable architecture of centrylized base station system
CN1977550B (en) * 2004-07-21 2011-05-11 Ut斯达康通讯有限公司 Extendable system structure of centralized base station system
CN100407596C (en) * 2004-08-27 2008-07-30 华为技术有限公司 Apparatus capable of constituting multi-mobile communication equipment and constituted mobile communication equipment thereof
WO2006066449A1 (en) * 2004-12-21 2006-06-29 Zte Corporation A base band processing module n+m backup method based on switching and device thereof
US7948948B2 (en) 2004-12-21 2011-05-24 Zte Corporation Base band processing module N+M backup method based on switching and device thereof
CN100399842C (en) * 2005-02-03 2008-07-02 芯通科技(成都)有限公司 Middle-frequency transmission method and middle-frequency interface for base-station to realize radio-frequency zoom-out
CN101090298B (en) * 2006-06-14 2011-04-20 大唐移动通信设备有限公司 Setting of RRH base station O&M channel
CN103098508A (en) * 2010-08-27 2013-05-08 株式会社日立制作所 Distributed antenna system and wireless communication method used in said system

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Publication number Publication date
US6058317A (en) 2000-05-02
CN1084127C (en) 2002-05-01
NO973944L (en) 1997-10-27
EP0812519B1 (en) 2005-01-26
EP0812519A1 (en) 1997-12-17
NO973944D0 (en) 1997-08-27
ES2235181T3 (en) 2005-07-01
DE69634244T2 (en) 2006-01-05
WO1996027269A1 (en) 1996-09-06
AU4721296A (en) 1996-09-18
JP3912795B2 (en) 2007-05-09
AU700641B2 (en) 1999-01-14
DE69634244D1 (en) 2005-03-03
FI950916D0 (en)
AT288173T (en) 2005-02-15
FI950916A (en) 1996-08-29
FI950916A0 (en) 1995-02-28
JPH11501172A (en) 1999-01-26

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